Cancel buttons...[give] users the opportunity to accidentally click on it when it’s mistaken for the Submit button. Removing the Cancel button completely remove

Cancel buttons...[give] users the opportunity to accidentally click on it when it’s mistaken for the Submit button. Removing the Cancel button completely removes the chances of this mistake happening. This is an excellent point. There are two situations where Cancel buttons are proper.... The first situation is confirmation windows.... The second situation is progress bars. Would this suggest that Cancel buttons are never appropriate on basic HTML / mobile websites? This seems like an extreme rule to me, but maybe it's good advice.